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kernel/linux-imx6_3.14.28/Documentation/fb/gxfb.txt 1.19 KB
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  [This file is cloned from VesaFB/aty128fb]
  
  What is gxfb?
  =================
  
  This is a graphics framebuffer driver for AMD Geode GX2 based processors.
  
  Advantages:
  
   * No need to use AMD's VSA code (or other VESA emulation layer) in the
     BIOS.
   * It provides a nice large console (128 cols + 48 lines with 1024x768)
     without using tiny, unreadable fonts.
   * You can run XF68_FBDev on top of /dev/fb0
   * Most important: boot logo :-)
  
  Disadvantages:
  
   * graphic mode is slower than text mode...
  
  
  How to use it?
  ==============
  
  Switching modes is done using  gxfb.mode_option=<resolution>... boot
  parameter or using `fbset' program.
  
  See Documentation/fb/modedb.txt for more information on modedb
  resolutions.
  
  
  X11
  ===
  
  XF68_FBDev should generally work fine, but it is non-accelerated.
  
  
  Configuration
  =============
  
  You can pass kernel command line options to gxfb with gxfb.<option>.
  For example, gxfb.mode_option=800x600@75.
  Accepted options:
  
  mode_option	- specify the video mode.  Of the form
  		  <x>x<y>[-<bpp>][@<refresh>]
  vram		- size of video ram (normally auto-detected)
  vt_switch	- enable vt switching during suspend/resume.  The vt
  		  switch is slow, but harmless.
  
  --
  Andres Salomon <dilinger@debian.org>